CASIO Data Bank ABC-30 No strap. Side buttons function. Backlight also illuminates. I don't know how to use the calculator function, and it's not responding when pressed. It's unclear whether a protective sheet is attached. It will be shipped in the condition shown in the images, so please check them. ☆ No comment, immediate purchase welcome. ☆ We may change from Yu-Yu Mercari to Raku-Raku Mercari. Thank you for reading to the end ☆☆☆ (＾ν＾) 22